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mjpeg: Report non-3 component rgb lossless as not supported

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Bug-Id: 1043
CC: libav-stable@libav.org
This commit is contained in:
Luca Barbato 2017-04-17 19:11:57 +00:00
parent 279e3aaa14
commit f2c469b73f
1 changed files with 6 additions and 0 deletions
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6
libavcodec/mjpegdec.c
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@ -1129,6 +1129,12 @@ int ff_mjpeg_decode_sos(MJpegDecodeContext *s, const uint8_t *mb_bitmask,
for (i = s->mjpb_skiptosod; i > 0; i--)
skip_bits(&s->gb, 8);
if (s->lossless && s->rgb && nb_components != 3) {
avpriv_request_sample(s->avctx,
"Lossless RGB image without 3 components");
return AVERROR_PATCHWELCOME;
}
next_field:
for (i = 0; i < nb_components; i++)
s->last_dc[i] = 1024;